deniskuzZ commented on code in PR #6413:
URL: https://github.com/apache/hive/pull/6413#discussion_r3441291752
##########
ql/src/java/org/apache/hadoop/hive/ql/metadata/Table.java:
##########
@@ -728,8 +750,50 @@ private boolean isField(String col) {
return false;
}
+ private void ensureColumnsIndexed() {
Review Comment:
@ramitg254, Iceberg does similar thing, please take a look
https://github.com/apache/iceberg/blob/main/api/src/main/java/org/apache/iceberg/Schema.java#L215-L234
````
private Map<Integer, NestedField> lazyIdToField() {
if (idToField == null) {
this.idToField = TypeUtil.indexById(struct);
}
return idToField;
}
private Map<String, Integer> lazyNameToId() {
if (nameToId == null) {
this.nameToId = ImmutableMap.copyOf(TypeUtil.indexByName(struct));
}
return nameToId;
}
````
i.e
````
lazyNameToColumn().get(colName.toLowerCase());
return column != null ? column.index() : null;
````
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